Traning apparatus/chair

ABSTRACT

The present invention relates to a device for exercising the muscles of the back and where the device comprises a chair seat ( 1 ) and a rod ( 2 ) which is fastened to a feet plate ( 3 ). The feet plate ( 3 ) is arranged to a tilting means ( 4 ) which is surrounded by a damping means ( 5 ). The damping means ( 5 ) can rest on a bottom plate ( 7 ) which is fastened by fastening means ( 6 ). A cloth which surrounds the damping means ( 5 ) and is fastened to the feet plate ( 3 ) can replace the bottom plate ( 7 ) and the fastening means ( 6 ). It is further an advantage that the rod ( 2 ) is telescopic. The tilting means ( 4 ) can have a circular cross section and a downwardly conical form. The damping means ( 5 ) which lies on to the tilting means ( 4 ) is of a flexible material and may be fastened to the feet plate ( 3 ) by fastening means ( 6 ) which can assist in dampening the movement of the tilting means.

[0001] The present invention relates to a device for exercising the muscles of the back.

[0002] Quite a few have problems with the back, and the most common reason is that one is seated while working and generally get too little exercise such that the muscles of the back are not trained and thereby give the necessary support to the back spine. Incorrect position while seated may in addition result in various back problems.

[0003] There exist several training apparatuses and devices, but few of these are primarily for training of the back muscles. From GB 1,541,288 there is known a kind of ergo meter bicycle which comprises a seat with a back support, the height of which is adjustable and rests directly on a sphere shaped body. The seat can accordingly be subject to a rolling and tilting movement. The person using the device shall have his feet placed on pedals at the front part of the device which simulate a bicycle. The device comprises several other means, and it is accordingly complicated and expensive.

[0004] There are also known other devices which can give the user a tilting movement. Thus it is known from the German patent publication DE 1,983,7963 A1 a semi sphere shaped device which rest on a bearing in a frame. On the semi sphere body there can be fastened a rigid holding rack. To the lower part of the semi spherical body there can be fastened a band secured to the side edge of the frame. The band will damp somewhat the movements of said body. This is a device for training the balance while standing upright. This device will however, not be suitable for training of the back muscles in an efficient way.

[0005] It is also known a similar device from U.S. Pat. No. 5,613,690 where a semi sphere shaped body is fastened to an upper plate which rests on a bottom plate. The two quadratic plates are secured to each other by springs, one in each corner. The device is connected to a computer in order to register the movements such that the balance training can be optimized. Nor this device will be suited for efficient training of the muscles of the back.

[0006] The main object of the invention was to arrive at a simple and cheap device for training of the muscles of the back and for treatment of already existing damages. The device should be small and applicable. The device should give exercise to the back and at the same time the person should be able to sit for performing possible work.

[0007] Having studied known devices in the field and more general training and exercising apparatuses, the inventor found that the user should sit during the exercise because so many people having problems with their back are sitting most of the day. One should then initiate tilting movements which would engage the muscles in the back and thereby strengthen the musculature in a sitting position.

[0008] The device is a special chair for exercising the back. The person sitting on the chair must keep the balance and thereby are the muscles in the spine exercised. With his seat on the chair seat 1 and his legs on a feet plate 3, the person is balancing by means of the functional parts 4,5,6 and 7.

[0009] The invention will be further explained and envisaged in connection with the description of the device, where:

[0010]FIG. 1 shows in perspective a device according to the invention;

[0011]FIG. 2 shows a vertical view of one embodiment of the invention; and

[0012]FIG. 3 shows a second embodiment of the invention.

[0013]FIGS. 1 and 2 shows a chair seat 1 and a telescopic rod 2 which is connected to the bottom plate 3. The feet plate 3 is arranged to a tilting means 4 which is surrounded by damping means 5. The damping means 5 can rest on a bottom plate 7 secured with fastening means 6.

[0014]FIG. 3 shows an alternative embodiment of the invention where a cloth surrounds the damping means 5 and is secured to the feet plate 3, replacing the bottom plate 7 and the fastening means 6. Here, the volume defined by the bottom plate 3 and the cloth 8 may be filled by damping means 5. As seen on the Figure the bottom edges of the chair is slightly rounded off. 4A denotes the surface of the tilting means. The surface may either be in the form of a spherical of substantial spherical shape or it may be formed by a truncated cone, the lower surface of which may be rounded off.

[0015] The chair seat 1 shall be vertically adjustable and preferably be round. It is also secured to the feet plate 3 by means of at least one rod, for instance a telescopic rod 2. By means of the telescopic rod 2 the distance between the chair seat 1 and the feet plate 3 can be regulated and adjusted to the person sitting on the chair. The bottom plate 3 which preferably is circular should be of a size such that the person sitting on the chair easily can fix his leg on the feet plate 3.

[0016] The tilting means 4 is fastened to the feet plate 3. The tilting means 4 may have a downward conical form, for instance a semi spherical shape and is preferably made of a solid material, for instance a polymer material. Other suitable shapes of the tilting means 4 may be applied. It might for instance have a downward curved shape, for instance convex. The diameter of the tilting means 4 should be equal to or smaller than the diameter of the feet plate 3.

[0017] The tilting means 4 rests on a bottom plate 7 which is at least as large as the damping means 5. The bottom plate 7 is preferably equipped with movement promoting means on it's under side, for instance wheels. The bottom plate 7 can also be in form of a cloth which is secured to the feet plate 3.

[0018] The damping means 5 fills the space between the feet plate 3, the tilting means 4 and the bottom plate 7. The damping means 5 shall stabilize the chair such that it will be possible to keep the balance. It can consist of a flexible material as for instance foamed polymer material, other types of polymer material, air or liquid. The damping means 5 can be adjustable such that the damping can be adjusted as needed.

[0019] The combined damping means 5 and fastening means 6 secures the bottom plate 7 to the feet plate 3. The combined damping means 5 and the fastening means 6 can for instance be elastic or resilient and can thereby assist in damping the movements of the tilting means 4.

[0020] The special feature of the invention is that the device comprises a chair seat secured to the feet plate by at list one rod. The distance between the seat and the feet plate can be regulated vertically. A tilting means is secured to the feet plate and the tilting means is arranged to a damping means.

[0021] It is further an advantage that the rod is telescopic.

[0022] The tilting means has preferably a circular cross section and a downward conical shape. The damping means which lies against the tilting means is preferably made of a flexible material.

[0023] The tilting means can be arranged to a fastening means secured to the feet plate and a bottom plate.

[0024] The damping means can be fastened to the feet plate with at least two fastening means which can be in the form of springs which can assist in dampening the movements of the tilting means.

[0025] The damping means can be arranged to a bottom plate which is secured to the feet plate with fastening means.

[0026] The damping means can be surrounded by a cloth which fastens the damping means to the feet plate and where the cloth is functioning both as bottom plate and fastening means.

[0027] By the present invention the inventor has succeeded in arriving at a device which is both simple and cheap. During testing it has been found that the user can sit firmly on the chair and still get excellent exercise of the muscles of the back. 

1-8. (Cancelled).
 9. A device for exercising the muscles of the back comprising a chair seat (1) fastened by at least one rod (2) and further a tilting means (4), the chair seat (1) being fastened to a feet plate (3) by the rod (2) and that the tilting means (4) is fastened to the feet plate (3), and that the tilting means (4) are surrounded by damping means (5) of flexible material.
 10. A device according to claim 9, wherein the distance between the seat (1) and the feet plate (3) can be regulated vertically.
 11. A device according to claim 9, wherein the rod (2) is telescopic.
 12. A device according to claim 9, wherein the titling means (4) has a circular cross section and a downwardly conical form.
 13. A device according to claim 9, wherein the tilting means (4) is arranged to a fastening means (6) secured to the feet plate (3) and a bottom plate (7).
 14. A device according to claim 9, wherein the damping means (5) is fastened to the feet plate (3) and the bottom plate (7) by at least two fastening means (6) which can be in the form of springs which can assist in dampening the movements of the tilting means (4).
 15. A device according to claim 9, wherein the damping means (5) is surrounded by a cloth which fastens the damping means (5) to the feet plate (3). 